Family files lawsuit in biracial man's death

MADISON, Wis. (AP) -- The family of a biracial man who died at the hands of a Madison police officer earlier this year has filed a federal civil rights lawsuit.

Officer Matt Kenny shot Tony Robinson in March. Kenny was responding to calls that Robinson had been running in traffic and had assaulted two people. Witnesses said Robinson was high on mushrooms. Kenny said Robinson attacked him, forcing him to open fire.

Investigators concluded Kenny didn't violate protocol and prosecutors declined to charge him with any criminal wrongdoing.

Robinson's family filed their lawsuit in Madison on Wednesday against the city and Kenny. They allege Kenny's conduct was unreasonable and violated Robinson's constitutional rights.

Deputy City Attorney Patricia Lauten says she hasn't seen the lawsuit but is vowing a vigorous defense.